I’d have to agree with your guide. It’s not a matter of the 7mm08 killing the bear… it will kill the thing just fine. The larger caliber is for the terrain, not the bear. POW gets 13 ft of rain a year. You can’t imagine how wet you can get until you’ve been in a true Southeast Alaska rain for your entire hunt. I’ll assume you’ll be shooting your bear on a beach…If the bear makes it to the woods, your chances of finding it go down dramatically. The moss up here soaks up blood and no red is left on the ground. The wet leaves on bushes do not hold as much blood as you’d think. On average, larger calibers will kill your bear faster. Your guide just wants the bear dead before it makes it to the woods. A nice new .338 win will do that faster than your 7mm08 with same shot placement. Like I said, it’s for the terrain, not the bear. Searching for blood in wet moss during a downpour, with devils club sticking you in the ass and everywhere else is not fun.